Aller au contenu
MediHelp
MediHelp Référence médicamenteuse

Interactions médicamenteuses

Cimetidine + Clozapine

Gravité: Majeure

Cimetidine and Clozapine: major interaction.

Dernière mise à jour

Réservé aux professionnels de santé — à titre de référence uniquement. Cette page est un bref résumé, pas un avis médical, et ne remplace ni la notice officielle ni le jugement clinique. Vérifiez toujours avant de prescrire ou de délivrer.

Le contenu clinique de cette page n'est disponible qu'en anglais.

Résumé

Cimetidine can increase clozapine levels, with reports of increased sedation, seizures and other toxicity. Clozapine has a narrow therapeutic window, so exposure changes matter.

Ce que signifie cette interaction, en termes simples

Cimetidine and Clozapine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.

Cimetidine belongs to Gastrointestinal Tract; Clozapine belongs to Central Nervous System.

Niveau de preuve: Moderate

Pourquoi elle survient

Cimetidine inhibits CYP1A2 and CYP3A4 metabolism of clozapine.

Conduite à tenir

Prefer famotidine or another acid suppressant; if cimetidine is used, monitor clozapine levels and for sedation, hypotension and seizures, and reduce the dose as required.

Questions à poser à votre pharmacien

  • Does the benefit of taking both outweigh the risk in my case?
  • Do I need any blood test, ECG or other check while on both?
  • What early warning signs should I watch for, and what should I do if they appear?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

Réservé aux membres Pro+

Débloquer la page complète

Créez un compte et lancez un essai Pro+ pour débloquer les conseils complets de prise en charge pour Cimetidine et Clozapine, les notes complémentaires, le détail des données probantes et le vérificateur d'interactions pour une ordonnance complète.

  • Full clinical management advice
  • Additional notes
  • Evidence detail
  • Interaction checker for a whole prescription
Créer un compte gratuit Se connecter

Essayez Pro+ gratuitement pendant 14 jours sur le web. Sans carte.

Questions fréquentes

Can I take Cimetidine with Clozapine?

MediHelp rates the interaction as major. Cimetidine and Clozapine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Cimetidine can increase clozapine levels, with reports of increased sedation, seizures and other toxicity. Clozapine has a narrow therapeutic window, so exposure changes matter.

How serious is the interaction between Cimetidine and Clozapine?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer famotidine or another acid suppressant; if cimetidine is used, monitor clozapine levels and for sedation, hypotension and seizures, and reduce the dose as required.

What other medicines interact with Cimetidine?

MediHelp also lists interactions of Cimetidine with, for example, Dofetilide, Fezolinetant, Alfentanil. The full list is on the Cimetidine page.

Monographies complètes, posologies et vérificateur d'interactions dans l'application MediHelp

Ouvrez le référentiel complet, vérifiez les interactions entre plusieurs médicaments et utilisez les outils de posologie dans l'application MediHelp.

Télécharger surApp Store Disponible surGoogle Play

Parcourir de A à Z · Interactions médicamenteuses

Télécharger l'app Se connecter